, 10 Days Battery Life & Quick Charge Technology: Featuring the dual chipset architecture and power-saving algorithms, this watch can last for 10 days. And with the quick charge technology, the watch can support you a whole day with only 5-minute charge. Wrist coverage range: 13 ~ 21 cm (Standard Model). System requirements: Android 6.0 or later, iOS 9.0 or later , 96 Workout Modes: HUAWEI WATCH FIT provides precise and real-time workout metrics for 11 professional sport modes including running, swimming and cycling. The 85 custom workout modes allow you to unleash your potential, whether you're into yoga or high-intensity interval training, the watch also keeps track of your real-time heart rate, calories and duration of the workout. , Real-time Metrics & Professional guidance: With a built-in GPS sensor, 5ATM, AI heart rate algorithm and innovative sensors, HUAWEI WATCH FIT is made for all the ways you exercise. This watch helps you train better by providing real-time metrics, scientific training effect evaluations and professional guidance. Ambient operating temperature: -10℃~+45℃ , 24-Hour Heart Rate Monitoring: HUAWEI TruSeen 4.0 heart rate monitoring technology, this smart watch can accurately monitor your heart rate in real-time during the day even when you are sleeping. And timely detect if your heart rate exceeds the normal range, and send out a reminder to provide you with all-day health protection. , Oxygen Saturation Detection: Very low levels of blood oxygen saturation (SpO2) can result in health problems. Try to wear HUAWEI WATCH FIT and start detecting SpO2 with a simple touch. Only a few seconds, it will show the detecting data accurately and give you a reference to pay attention to your health. , Compatible with iOS/Android